Power meter with background subtraction
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United States of America Patent
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Dec 27, 1994
Issued Date -
N/A
app pub date -
Apr 24, 1994
filing date -
Sep 16, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A technique for performing background suppression in photodiode detectors is disclosed. A first detector measures the light emitted by the source to be measured and the background light, while a second detector simultaneously measures the background light only. The value measured by the second detector is subtracted from the value measured by the first detector, and the difference represents the portion of the first detector's measured value which is attributable to the source to be measured.
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Cited Art Landscape
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